FR3079926B1 - METHOD FOR AUTOMATIC CALIBRATION OF A CAMSHAFT SENSOR FOR CORRECTING A FALSE ROUND TARGET - Google Patents
METHOD FOR AUTOMATIC CALIBRATION OF A CAMSHAFT SENSOR FOR CORRECTING A FALSE ROUND TARGET Download PDFInfo
- Publication number
- FR3079926B1 FR3079926B1 FR1852946A FR1852946A FR3079926B1 FR 3079926 B1 FR3079926 B1 FR 3079926B1 FR 1852946 A FR1852946 A FR 1852946A FR 1852946 A FR1852946 A FR 1852946A FR 3079926 B1 FR3079926 B1 FR 3079926B1
- Authority
- FR
- France
- Prior art keywords
- sensor
- representative
- camshaft sensor
- correcting
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/001—Calibrating encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
- G01D18/004—Continuous recalibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24471—Error correction
- G01D5/24476—Signal processing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
L'invention concerne un procédé de calibration automatique d'un capteur (10') d'arbre à cames pour moteur de véhicule automobile. Le capteur (10') comporte un module de traitement (13') configuré pour générer, à partir d'un signal brut (20) représentatif des variations d'un champ magnétique induites par une rotation d'une cible (14) et mesuré par une cellule primaire (12'), un signal de sortie (30) représentatif des instants de passage de dents (D1, D2, D3) de la cible devant la cellule primaire. Le capteur comporte en outre deux cellules secondaires (12a, 12b) de mesure. Le procédé de calibration permet alors de déterminer deux seuils de commutation (Sre, Sfe) différents pour chaque dent à partir d'un signal différentiel (40) représentatif d'une différence de mesure du champ magnétique par les cellules secondaires. L'invention concerne également un capteur (10') d'arbre à cames mettant en œuvre un tel procédé, ainsi qu'un véhicule automobile comportant un tel capteur.The invention relates to a method for automatically calibrating a camshaft sensor (10 ') for a motor vehicle engine. The sensor (10 ') comprises a processing module (13') configured to generate, from a raw signal (20) representative of the variations of a magnetic field induced by a rotation of a target (14) and measured by a primary cell (12 '), an output signal (30) representative of the instants of passage of teeth (D1, D2, D3) of the target in front of the primary cell. The sensor further includes two secondary measuring cells (12a, 12b). The calibration process then makes it possible to determine two different switching thresholds (Sre, Sfe) for each tooth from a differential signal (40) representative of a difference in measurement of the magnetic field by the secondary cells. The invention also relates to a camshaft sensor (10 ′) implementing such a method, as well as a motor vehicle comprising such a sensor.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1852946A FR3079926B1 (en) | 2018-04-05 | 2018-04-05 | METHOD FOR AUTOMATIC CALIBRATION OF A CAMSHAFT SENSOR FOR CORRECTING A FALSE ROUND TARGET |
US17/043,245 US11353346B2 (en) | 2018-04-05 | 2019-03-28 | Method for automatic calibration of a camshaft sensor in order to correct a reluctor runout |
PCT/FR2019/050725 WO2019193271A1 (en) | 2018-04-05 | 2019-03-28 | Method for automatic calibration of a camshaft sensor in order to correct a reluctor runout |
CN201980037423.1A CN112204354B (en) | 2018-04-05 | 2019-03-28 | Method for automatically calibrating a camshaft sensor to correct target run-out |
KR1020207031925A KR20200139789A (en) | 2018-04-05 | 2019-03-28 | How to automatically calibrate a camshaft sensor to correct for reductor runout |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1852946A FR3079926B1 (en) | 2018-04-05 | 2018-04-05 | METHOD FOR AUTOMATIC CALIBRATION OF A CAMSHAFT SENSOR FOR CORRECTING A FALSE ROUND TARGET |
FR1852946 | 2018-04-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR3079926A1 FR3079926A1 (en) | 2019-10-11 |
FR3079926B1 true FR3079926B1 (en) | 2020-03-13 |
Family
ID=62528676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1852946A Active FR3079926B1 (en) | 2018-04-05 | 2018-04-05 | METHOD FOR AUTOMATIC CALIBRATION OF A CAMSHAFT SENSOR FOR CORRECTING A FALSE ROUND TARGET |
Country Status (5)
Country | Link |
---|---|
US (1) | US11353346B2 (en) |
KR (1) | KR20200139789A (en) |
CN (1) | CN112204354B (en) |
FR (1) | FR3079926B1 (en) |
WO (1) | WO2019193271A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11189635B2 (en) | 2019-04-01 | 2021-11-30 | Applied Materials, Inc. | 3D-NAND mold |
US11930637B2 (en) | 2020-06-19 | 2024-03-12 | Applied Materials, Inc. | Confined charge trap layer |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6100682A (en) | 1998-09-28 | 2000-08-08 | General Motors Corporation | Three-element angular position sensor |
US7184876B2 (en) | 2004-06-18 | 2007-02-27 | Siemens Vdo Automotive | Device and process for determining the position of an engine |
US7541802B2 (en) * | 2006-12-08 | 2009-06-02 | Infineon Technologies Ag | Method and apparatus for evaluating a sensor signal associated with a rotating object |
US20120249126A1 (en) | 2011-03-31 | 2012-10-04 | Allegro Microsystems, Inc. | Circuits and methods for motion detection |
FR2978833B1 (en) * | 2011-08-04 | 2014-05-02 | Continental Automotive France | AUTOMATIC CALIBRATION METHOD OF CAMSHAFT SENSOR FOR MOTOR VEHICLE |
US9638548B2 (en) | 2012-05-07 | 2017-05-02 | Infineon Technologies Ag | Output switching systems and methods for magnetic field sensors |
US9329057B2 (en) | 2012-05-31 | 2016-05-03 | Allegro Microsystems, Llc | Gear tooth sensor with peak and threshold detectors |
US9739637B2 (en) | 2014-10-31 | 2017-08-22 | Allegro Microsystems, Llc | Magnetic field motion sensor and related techniques |
FR3041426B1 (en) * | 2015-09-18 | 2019-03-22 | Continental Automotive France | AUTOMATIC CALIBRATION METHOD OF CAMSHAFT SENSOR FOR MOTOR VEHICLE ENGINE |
FR3044087B1 (en) * | 2015-11-25 | 2018-11-16 | Continental Automotive France | AUTOMATIC CALIBRATION METHOD OF CAMSHAFT SENSOR FOR MOTOR VEHICLE ENGINE AND ASSOCIATED SENSOR |
US9880026B1 (en) * | 2016-07-14 | 2018-01-30 | Allegro Microsystems, Llc | Magnetic field sensor for detecting motion of an object |
US9933448B1 (en) * | 2017-01-11 | 2018-04-03 | Infineon Technologies Ag | Stray-field robust, twist-insensitive magnetic speed sensors |
GB2560522B (en) | 2017-03-13 | 2022-03-16 | Aiq Dienstleistungen Ug Haftungsbeschraenkt | Dynamic sensitivity distributed acoustic sensing |
US10739368B2 (en) * | 2017-05-18 | 2020-08-11 | Infineon Technologies Ag | Incremental speed sensor with redundant sensor elements |
-
2018
- 2018-04-05 FR FR1852946A patent/FR3079926B1/en active Active
-
2019
- 2019-03-28 CN CN201980037423.1A patent/CN112204354B/en active Active
- 2019-03-28 US US17/043,245 patent/US11353346B2/en active Active
- 2019-03-28 KR KR1020207031925A patent/KR20200139789A/en not_active Application Discontinuation
- 2019-03-28 WO PCT/FR2019/050725 patent/WO2019193271A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN112204354A (en) | 2021-01-08 |
US20210025737A1 (en) | 2021-01-28 |
FR3079926A1 (en) | 2019-10-11 |
US11353346B2 (en) | 2022-06-07 |
KR20200139789A (en) | 2020-12-14 |
CN112204354B (en) | 2023-03-14 |
WO2019193271A1 (en) | 2019-10-10 |
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